创建取汉字首字母函数

create function [dbo].[f_getpy_V4]( @col varchar(1000))returns varchar(1000) begin declare @cyc int,@len int,@sql varchar(1000),@char varbinary(20) select @cyc = 1,@len = len(@col),@sql = '' while @cyc <= @len begin select @char = cast(substring(@col, @cyc, 1) as varbinary) if @char>=0XB0A1 and @char<=0XB0C4 set @sql=@sql+'A' else if @char>=0XB0C5 and @char<=0XB2C0 set @sql=@sql+'B' else if @char>=0XB2C1 and @char<=0XB4ED set @sql=@sql+'C' else if @char>=0XB4EE and @char<=0XB6E9 set @sql=@sql+'D' else if @char>=0XB6EA and @char<=0XB7A1 set @sql=@sql+'E' else if @char>=0XB7A2 and @char<=0XB8C0 set @sql=@sql+'F' else if @char>=0XB8C1 and @char<=0XB9FD set @sql=@sql+'G' else if @char>=0XB9FE and @char<=0XBBF6 set @sql=@sql+'H' else if @char>=0XBBF7 and @char<=0XBFA5 set @sql=@sql+'J' else if @char>=0XBFA6 and @char<=0XC0AB set @sql=@sql+'K' else if @char>=0XC0AC and @char<=0XC2E7 set @sql=@sql+'L' else if @char>=0XC2E8 and @char<=0XC4C2 set @sql=@sql+'M' else if @char>=0XC4C3 and @char<=0XC5B5 set @sql=@sql+'N' else if @char>=0XC5B6 and @char<=0XC5BD set @sql=@sql+'O' else if @char>=0XC5BE and @char<=0XC6D9 set @sql=@sql+'P' else if @char>=0XC6DA and @char<=0XC8BA set @sql=@sql+'Q' else if @char>=0XC8BB and @char<=0XC8F5 set @sql=@sql+'R' else if @char>=0XC8F6 and @char<=0XCBF9 set @sql=@sql+'S' else if @char>=0XCBFA and @char<=0XCDD9 set @sql=@sql+'T' else if @char>=0XCDDA and @char<=0XCEF3 set @sql=@sql+'W' else if @char>=0XCEF4 and @char<=0XD1B8 set @sql=@sql+'X' else if @char>=0XD1B9 and @char<=0XD4D0 set @sql=@sql+'Y' else if @char>=0XD4D1 and @char<=0XD7F9 set @sql=@sql+'Z' set @cyc = @cyc + 1 end return @sql endgo